What is vlan?
VLAN is Virtual Local area network and it is a group of hosts with a common set of requirements that communicate as if they were attached to the same broadcast domain, regardless of their physical location. VLANs are configured through software rather than hardware, which makes them extremely flexible.
VLAN ID is a number identifier for a particular VLAN.
VLAN is a group of hosts with a common set of requirements that communicate as if they were attached to the same broadcast domain, regardless of their physical location. Inter VLAN is defined as two VLANS connected to each other and communicating.
A VLAN is a virtual LAN. In technical terms, a VLAN is a broadcast domain created by switches. Normally, it is a router creating that broadcast domain. With VLANs, a switch can create the broadcast domain. This works by, you, the administrator, putting some switch ports in a VLAN other than 1, the default VLAN. All ports in a single VLAN are in a single broadcast domain. Because switches can talk to each other, some… Read More
Why would packets from the router or hosts fail when trying to reach the switch management interfaces if the native VLAN were left in default?
The native VLAN is untagged. If the VLAN 99 traffic to the router is untagged (as it would be, because that is native on the switches), the router cannot interpret the data because there is no VLAN information in the header as expected. In turn, the router tags all VLAN 99 traffic outbound, and leaves VLAN 1 data untagged, so the switches are unable to correctly interpret either. VLAN traffic to the other VLANs should… Read More
The network administrator needs to remove the east-hosts vlan and use the switch port from that vlan in one of the existing vlans what two commands should be used when completely removing vlan 2 from?
no vlan XXX copy run star
It is the VLAN that supports untagged traffic on an 802.1Q trunk
Vlan database is vlan.bat file which is stored in flash memory and earlier in NVRAM. It is used to store vlan information. we can take back up of this file.
What is the function of VTP in a LAN switching environment? controls broadcastsstandardizes VLAN tagssimplifies VLAN managementcreates subinterfaces for inter-VLAN routing
Usually it's part of telling a switch interface to operate on a certain VLAN (Virtual Local Area Network). In this case VLAN 99.
When multiple VLAN are created do you need a router to move data across the VLAN even though the all VLAN are within one subnet?
No, router is not necassary. All traffic will transfer data within the network.
Devices in the same VLAN are part of the same subnet, or "group". (The fact of belonging to one VLAN or another is, to a certain degree, independent of the physical location, thus the name "virtual".)
vlan trunking protocols. eg :802.1q ,ISL
VLAN is one of the application supported by IPsec . A virtual private network is private but virtual. Virtual private network uses ESP protocol of IPsec in tunnel mode .
VLAN 1 is the management VLAN. All switch ports are members of VLAN1.
A Vlan can be used to reduced the amount of background chatter on the network from other devices not used by VOIP.
Answer VLANs are created on Layer 2 switches to control broadcasts and enforce the use of a Layer 3 device for communications. Each VLAN is created in the local switch's database for use. If a VLAN is not known to a switch, that switch cannot transfer traffic across any of its ports for that VLAN. VLANs are created by number, and there are two ranges of usable VLAN numbers (normal range 1-1000 and extended range… Read More
• Access link: An access link is a link that is part of only one VLAN, and normally access links are for end devices. Any device attached to an access link is unaware of a VLAN membership. An access-link connection can understand only standard Ethernet frames. Switches remove any VLAN information from the frame before it is sent to an access-link device. • Trunk link: A Trunk link can carry multiple VLAN traffic and normally… Read More
No- A VLAN is a single broadcast domain. If the VLAN uses a hub, which essentially connects all devices on a single wire, the the VlAN would be a collision domain. However hubs are rarely seen these days. A network switch keeps every device separated on individual collision domains so every device is kept from colliding with any other device.
What are three features of router-on-a-stick, inter-VLAN routing? (Choose three.)
A trunk connection is affected by broadcast storms on any particular VLAN that is carried by that trunk.
A VLAN trunk allows for data to travel across a single link between two devices even if the data is from multiple VLANs. This allows for reduced cabling needed as for you won't have to run multiple cables between switches in order to have up-links for every VLAN.
switch(config)#int type <no> switch(config-if)#switchport mode trunk switch(config-if)#switchport trunk allowed vlan all/vlan no switch(config-if)#exit switch(config)#exit switch#
Banks will benefit more from VLAN rather than LAN. VLAN allows to split your network in logical pieces, such as, accounting, credit department, fraud department etc. Also if configured properly people registered in certain VLAN can connect to it from different places in the building and do not have to be in the same room.
If one VLAN has got many end devices (nodes), significant bandwidth will be hogged by that VLAN. In this case nodes in other VLANs will be starving for the BW.
The minimum size of an Ethernet frame is 64 bytes. Even if the VLAN tag is 4 bytes, the Ethernet frame with VLAN tagging remains 64 bytes.
1) reset the revision number before installing. 2) have a backup switch with existing VLAN data.
If a switch receives a frame (a piece of data) from a certain port, it will identify that as belonging to a certain VLAN, because each port is assigned a certain port. In a trunk link, additional data is added to each frame (frame tagging), to identify to which VLAN each frame belongs.
A switch running in VTP Transparent mode will not participate in VLAN synchronization. With VTP version 2, it will forward VLAN traffic out its trunk interfaces.
inter_vlan routing on d'link DGS3612 is automatic,you just creates vlan and tag them to the port access and trunk
What is the purpose of VLAN trunking
Encrypted communication between 2 points.
Vlan trunk Protocol
Access like carry the single vlan information & Trunk link able to carry the multiple vlan information when frames are travels from trunk mani shanker
How many physical interfaces are required to perform inter-VLAN routing with traditional inter-VLAN routing?
Traditional inter-VLAN routing using physical interfaces does have a limitation. As the number of VLANs increases on the network, the physical approach of having one-router-interface-per-VLAN quickly becomes hindered by the physical hardware limitations of a router. Lewis, Wayne (2008-04-28). LAN Switching and Wireless, CCNA Exploration Companion Guide (Kindle Locations 6966-6968). Pearson Education (USA). Kindle Edition.
The main one is broadcast traffic reduction on a LAN.
yes, it reducing the network traffic
VLANs provide the capability so virtually segregate traffic on a network. VLANs work by tagging traffic packets and ensuring that packets with separate VLAN IDs are only available at ports which have been configured for that VLAN ID.
A network administrator implements inter-VLAN routing by configuring subinterfaces on a router What is one important fact that must considered?
The IP address of each router subinterface mist be used as the default gateway for hosts on the corresponding VLAN.
A virtual LAN, commonly known as a VLAN, is a group of hosts with a common set of requirements that communicate as if they were attached to the same broadcast domain, regardless of their physical location. A VLAN has the same attributes as a physical LAN, but it allows for end stations to be grouped together even if they are not located on the same network switch. Network reconfiguration can be done through software instead… Read More
Virtual local-area networks (VLANs) are a switching technology used to improve network performance by separating large broadcast domains into smaller ones. (quote from CCNA 640-802 Exam Topics) The abbreviation VLAN stands for "Virtual Local Area Network". A VLAN is used to segment a physical network into several logical networks which do not interfere with eachother, even though the data might be traveling on the same physical wires.
VLAN stands for Virtual LAN. It is called as such because you are essentially creating "virtual" networks on the same physical piece of hardware. Imagine a network switch with 20 ports. You could assign the first 5 to VLAN1, the next to VLAN2, and so on. You would end up with 4 segregated networks, but on the same physical switch. The virtual in VLAN is referring to the fact that there is nothing phsically separating… Read More
VLAN Answer Explanation: A virtual LAN (VLAN) allows endpoints to be grouped together as though they were on the same network segment, regardless of their physical location within the network. It creates a common broadcast domain that the members of the VLAN share regardless of the physical switch to which they are attached. VLANs provide a means for grouping users with common needs, and they can be used to segregate traffic from other areas of… Read More
switchport access vlan vlanID
1006 and 4094
A physical router device with an interface that routes between two or more VLANs that are attached to a VLAN network segment by a trunk link. In other words a " router on a [ TRUNK ] " which is originating from switches with independent non routing VLANs.
VLAN and PoE are used
A tag added to each frame's header.
They give homework for a reason, so you learn...
The network administrator wants to separate hosts in building a into two vlans numbered 20 and 30 which two statements are true concerning vlan configuration?
- TheVLANs may be named. - The network administrator may create the VLANs in either global configuration mode or VLAN database mode.
Each subinterface should be configured with its own IP address, subnet mask, and unique VLAN assignment. The physical interface of the router must be connected to a trunk link on the adjacent switch.